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DRM_VMA_OFFSET_MANAG(9) DRM Core DRM_VMA_OFFSET_MANAG(9)

NAME

drm_vma_offset_manager_init - Initialize new offset-manager

SYNOPSIS

void drm_vma_offset_manager_init(struct drm_vma_offset_manager * mgr, unsigned long page_offset, unsigned long size);

ARGUMENTS

mgr
Manager object
page_offset
Offset of available memory area (page-based)
size
Size of available address space range (page-based)

DESCRIPTION

Initialize a new offset-manager. The offset and area size available for the manager are given as page_offset and size. Both are interpreted as page-numbers, not bytes.
Adding/removing nodes from the manager is locked internally and protected against concurrent access. However, node allocation and destruction is left for the caller. While calling into the vma-manager, a given node must always be guaranteed to be referenced.

AUTHORS

Jesse Barnes <jesse.barnes@intel.com>
 
Intel Corporation,
Initial version
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 
Ideas on board SPRL,
Driver internals
Daniel Vetter <daniel.vetter@ffwll.ch>
 
Intel Corporation,
Contributions all over the place

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16